Police say it smells like an inside job

Accordingly to TMZ report

THE KARDASHIAN FAMILY and POLICE do not believe it was a coincidence that KIM KARDASHIAN was bodyguard-less at the time the robbers showed up & somehow made their way into her apartment ... they think the robbers were tipped off it was the right time to strike. There was a very small window when the robbers had easy access. KIM KARDASHIAN had friends over until shortly before the incident went down.



KIM KARDASHIAN'S bodyguard was always by her side -- to the point KIM K. joked that it got annoying -- except for the few hours he left to protect KOURTNEY KARDASHIAN and KENDALL JENNER in a nearby nightclub.

The Kardashians are in no way suggesting the bodyguard was in on it ... in fact, they say they know he was not. But they are convinced someone tipped off the robbers to strike at precisely the moment they could get in and out without detection.
As we reported ... robbers confronted the concierge at gunpoint in the lobby and he let them up to KIM KARDASHIAN'S unit. We are told when the robbers left with the jewelry, they took the concierge back downstairs.

We're told if there was a tip-off person, there's a long suspect list ... there are multiple units in the building and lots of people involved in Paris Fashion Week knew Kim K's comings and goings.

Our sources say cops are in the process of checking phone records of various people in and around the building to track suspicious activity.